Type-writing machine.



APPLICATION FILED NOV 4, 1899 RENEVIED FEB 5 I9I6.

Patented Sept. 5,1916.

12 SHEETS- SHEET I.

T. cAHlLL. TYPE WRITING MACHINE.

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T. CAHILL.

TYPE WRITING MACHINE. 1

APPLICATION man Nov. 4. 1899. niusweo ris. 5. |916.

1,197,103. Patente'dsept. 5,1916.

12 sHEis-SHEET 2.

T. CAHILL.

TYP'E WRITING MACHINE. APPLICATION FILED Nav.4.1a9. RENEwED FEB. 5.1916.

1,197,103. Patentedsept. 5,1916.

l2 SHEETS-SHEET 3.

T. CAHILL.

TYPE WRITING MACHINE.

APPLICATION mw nov. 4, 1899. nzufwzo ma. 5.1916.

T. CAHILL.

TYPE WRITING MACHINE.

APPLICATION FILED Nov. 4, |899. RENEwED rta. 5.1916.

1,197,103. Parent-ed sept. 5,1916.

12 SHEETS-SHEET 5.

T. CAHILL.

TYPE WRITING MACHINE.

APPLICATION FILED Nov.4,1a99. IIENEwEn FEB. 5; I9I6.

Patented Sept. 5, 1916.

i2 SHEETS-SHEET 6.

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TYPE WRITING MACHINE.

APPLICATION min nov. 4. sass. nzneww FEB. 5.1916.

Patented Sept. 5, 1916.

12 SHEETS-sain i.

T. CAHILL.

TYPE WRITING MACHINE.

APPLICATION mso Nov. 4. |899. nznzwsu rss. 5.1916.

1 1 97, 1 O3 Patented Sept. 5, 1916.

12 SHEETS-SHEET '8.

T. CAHILL. TYPE WRITING MAcHlNE.

APPLICATION FILED NOV- tM1899- RKNEWED FEB. 5 |9I6.

T. CAHILL.

TYPE WRITING MACHINE.

APPLICATION man Nov.4,199. IIENEwED FEB. 5. |916.` 1,1 O3, Patented Sept. 5, 1916.

I2 SHEETS-SHEET Io.

- T. CAHILL.

TYPE WRITING MACHINE.

APPLlcATIon mio Nov. 4. |899. nzuiwzv rss. 5.1916.

1 1 97, 1 03. Patent-ed Sept. 5, 1916.

12 SHEETS-SHEET 1|.

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TYPE WRITING MACHINE. APPLICATION man Nov.4.1899. RENEwED ifs. 5.1916.

1 1 97, 1 O3 Patented Sept. 5, 1916.

Fly! 'Z UNITED STATES PATENT OFFICE.

THADDEUS CAI-IILIJ, 0F NEW YORK, N. Y., ASSIGNOR T0 JAMES B. LAMBIE, E. HILTON JACKSON, GEORGE FREDERICK CAHILL, AND ARTHUR T. CAHILL, TRUSTEES.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented Sept. 5, 1916.

Application filed November 4, 1899, Serial No. 735,813. Renewed February 5, 1916. Serial No. 76,459.

To all whom it may concern:

Be it known that I, THAnDnUs CAHILL, a citizen of the United States, and of the cit-y, county, and State of New York, residing temporarily at Washington, in the District of Columbia, have invented certain new and useful Improvements in Type- VVriting Machines, of which the following is a` specification..

The machine hereinafter described is in the nature of an improvement upon typewriting machines illustrated and described in divers patents of the United States to me, and applications for patents of the United States filed by me in the United States Patent Oflice, and now pending there; and particularly upon machines illustrated and described in my pending application No. 601,520 filed August 3, 1896 and No. 700,231 filed December 24, 1898, vwhich applications have issued since the original filing date of .this application as Letters Patent No.

656,576 dated August 21, 1900, and No. 657476, dated September 4, 1000.

The object of my present invention is to make a typewriting machine, very simple in its construction, durable, and inl which the work is done by power other than that eX- erted by the operator upon the key; and my invention consists in the improvements and combinations hereinafter described and specifically set forth in the statement of claim at the end hereof.

The drawings illustrate a machine built in accordance with the principles of my inventions, and in these drawings-*Figure 1 is a side elevation of the machine; Fig. 2 is a horizontal section on the line 2, Q, of Fig. 1; the type-bars being omitted; Fig. 2a is a horizontal section on the line 2, 2a of Fig. 1, and in this view certain portions of the mechanism are broken away in order to expose other parts to view; Fig. 3 is a longitudinal, vertical section, on the line 3, of

Fig. 2; Fig. -1 is a rear elevation; Fig. 5 is a detail section, partly 1n elevation, illustrat- `ing the type-bar actuating mechanism; Fig.

A(i is a detail, perspective view, illustrating the rear end of a key with the connection between the same and the link 67, by which the corresponding pivoted movement-receiving arm is thrown over the motor-frame; Fig. 7 is a detail side elevation, partly in section, 'illustrating the spacing mechanism;

Fig. 8 is a rear view of thesame; Fig. 8 is a detail perspective v-iew of the fast dog and carrier; Fig. 8b is a detail perspective View of the loose dog and carrier; Fig. 8 is a detail elevation, partly in section, of the loose dog and carrier; Fig. 9 is a plan View illustrating the ribbon-operating mechanism; the top plate, below which said mechanism lies, being shown in dotted lines; Fig. 10 is a detail section, partly in elevation, on the line v10, 10, of Fig. S); Fig. 10a is a` rear view of the spring-box; Fig. l0b is a front view of the spring-box; Figi 10c is a sectional view of the spring-box; Fig. 11 is a top view of the iunior-carriage, yoke, and rackfranie; Fig. 12 is an elevation of the same viewed from the right of the operator; and Fig. 13 is a cross-section on the line 13, 13, of Fig. 11; Fig. 1l is a front elevation of the yoke, which connects the shifting platencarrier with the hinge-and-guide rod; Fig. 15 is a detail perspective view of the same; Fig. 10 is a planl view of theI rack-frame; Fig. 17 is a plan view of the paper-carriageframe; Fig. 17a is a detail sectional view of the tension band pulley, on the line 17u 17 of Fig. 17; Fig. 17b is a front view of the same; Fig. 17 is a detail sectional view of a spring paper-guide-finger on the line 17c 17 of Fig. 17; Fig. 17 is a detail sectional view of the paper-finger, on the line 17d 17d of Fig. 17; Fig. 170 is a detail sectional View on the line 17e 17e of Fig. 17d. Figs. 17, 17", 17C, 17, and 17" are on a larger scale, it will be observed, than the preceding figures.

Similar letters refer to similar parts in all the figures.

is tht` bed-plate; 2 is the top-plate; 3, 3, the sides, bolted to the bed-plate and carrying the top-lilate; l is the fulcrum-plate, attached to the` side-plates, 3, 3; 5, 5, are the keys; G, the type-bars. mounted by means of hangers, 7, 7. screwed to the hanger-ring 8, in the usual fashion.

10 is the motor-magnet, arranged in the manner hereinafter described, to actuate the type-bars.

11 is the motor-frame actuated by thel magnet 10, and serving as a medium be-l tween said magnet and type-bars. 'V

20 is the circuit-closing frame, which acts, when a.,key is depressed, to close the eireuil of magnet 10, before mentioned. j

30 is the releasing-frame, actuated by th i. magnet 10, aforesaid, and acting to release the type-bar and spacing dogs,` to `pprmit lll the same to return to their` normal positions in advance of the release ottfthe key.

Typedhcontrolling mcc/Lamsm.-The

movement of the type-bars is controlled by i with the front row 41, serving for the two The bell-cranks 45,

the keys. That is to say, when any key is depressed the corresponding type-bar is caused to operate; but the type-bars are not actuated by the keys. They are actuated by a motor device, preferably the magnet 10 before mentioned. The keys .5, 5, are fiilcriimed upon the har 40, which is provided two rows of fulcrum points 41 and 42; front rows or banks of keys, while the rear fiilcriim points 42, serve forY the twoI rear rows or banks of keys. The use of the two rows of fulcrum points equalize the leverages is to approximately of the keys. Each of .the key levers, 5, 5, is furnished at the rear with a metal extension piece, which is so shaped as to act upon the jack 44, and to leave room for the releasing frame 30 ,to operate. Overlying each of the key extensions 43 is a jack 44, pivoted to the bellcrank 45, and held by a contractile spring 46, in engagement with the key extension 43. areA mounted in slots milled transversely in a bar 47, and each is pivoted on a rod 48. Corresponding to each mounted side by side with it in the same is an arm 4,9, upon which a pin 50'in bellcrank 45 acts when the key is depressed to i throw the arm in the direction of the arrow inner end of each in Fig. 5. The arm 49 is engagement with the pin 50, by the contraetile spring 51 attached to the plate 52. Corresponding to the type-bars is a set of levers 60, 60, which for distinctions and convenieiices sake we may term type-bar-correspending levers. Each of these levers is fulcrumed upon a pin 61, set in the milled slot in the top of the fulcrum piece G2, which fulcriim piece is furnished with a screwthreaded shank which enters a hole in the fulcrum plate ,4, and is held fast therein by a retaining nut 63. The fulcruiiis of the type-bar corresponding levers G0. 60, are preferably disposed in an elliptical or quasilield normally in Ielliptical fashion, and they are made preferably' of varying lengths, as illustrated.I for example, in Fig. 2, so that when their outer ends are connected by links 64 pivoted to the type-bar-corresponding levers and screwthreaded toA receive the rod orwire 65 connected with the corresponding type-bar, their inner ends lie in juxtaposition. To the of said type-bar-corresponding levers is hinged or pivoted a move- -inent-re'ceiving ai'in, 66, which is connected by, a link 67, with the arm 49, Abefore mentioned. The movement-receiving armsy, lie in proximity t0 the striking surface of the oscillatin motor frame 11, but normally clear of it. aid motor frame 1l, as I have constructed it (though the details of construction may be altered veryfwidely according to the judgment of the constriictor,) consists of a center rod or shaft 11, pivoted on hardened points 11b, and having arms 11C, 11., brazed or silver-soldered to it. To these arms is attached a front piece 11, of sheet metal, arranged on edge, with another piece 1'1e silver soldered, brazed or' otherwise suitably attached thereto, and acting to gi ve movement to the movement-receiving arms (i6, GG. By these means I obtain a maximum of strength with a minimum of inertia, which I have found by much experiment to be of some importance in securing the necessary rapidity of operation without an undue amount of noise and vibration, or an undesirable amount of spark in the interrupting of the circuit of the motor magnet; but while I consider these details of construction of someA importance, Ivdo not at all limit .myself to them in the carrying out of the broader features of my invention.

The motor frame J1, is actuated by the magnet 10. Said magnet may of course be of any suitable form, but to obtain the requisite rapidity 'of operation I have been using a magnet consisting of a core piece 10a attached to a soft iron plate 10b, (which plate is attached to one of the side plates 3,) a cylindrical armature 10c, lying in line with the core piece 102l and inside the same tube, 10d, and having outside said tube an enlarged head to allow the magnetism to flow nioi'c readily. into the air, by which the return circuit is completed; about the tube 10d, is wound the energizing coil 10"; a link 10f connected by a shoulder-pin 10g Vto the motor-frame 11, and having the other end screw-threaded to enter the armature 10, is provided with a lock-nut 10h, whereby' the necessary adjustment of the armature 10c, with relation to the Acore-piece 10, can he iliade instantly. The elfect of the whole arrangement is that when a key is depressed and the circuit of the niotor-magnet' 10` closed', the core-piece 10, acting on the armature 10, gives movement to the motorframe 11, which in turn gives movement to thetype-bar corresponding to the key depressed, and also to the spaceldogs in the manner hereinafter described.

20 is, as aforesaid, the circuit-closin frame, which consists of (ai) an axial sha fuleruined by means of points 21, 21, set in the bed-plate, the front vpart overlyingr all the bell-cranks 45, 45; connecting saidfront part with the axial shaft; and (c) a an insulating bushing 23 of hard fiber, vulcanite'or other suitable .material is fixed to carry the contact screw 24, furnished with a platinum point and adjustable by a nut 25, which Contact screw serves, when a key vertical arm 22, in which is depressed, to make connection with the contact spring 26, thereby closing the clrcuit of the battery 13, or other source of voltage through the motor-magnet 10 before mentioned. I have found it advantageous, in securing the most rapid operation, to have the contact-spring 2G normally under a little tension. The necessary tension is `given by means of the adjusting screw 27, set in the back of the bed-plate 1, and

lhaving an insulating cap 28 to bear against the contact-spring 2G, and a lock nut 29, whereby its position can bc adjusted to give the spring 2G the tension required. Any key, then, when depressed connects the corresponding type-bar with the motor frame, and causes the circuit of the motor-magnet 10 to be closed so that said magnet becomes energized, and giving movement to the motor-frame 11, actuates said type-bar. In other words, each key when 1depressed by the operator in front of the center, rises back of the center, and through the jack 44, bell-crank 45, and `pin 50, gives movement to the arm 49, and the link 67, throwing the movement-receiving arm 6G, connected with one end of the type-bar-corresponding lever,

(Whose other end is connected with the short arm of the type-bar corresponding to the key depressed) over the motor frame 11; and at the same time said bell-crank 45, acting upon the circuit-closing frame brings the contact-screw 24, carried by the arm 22, into connection with the contact spring 26, thereby closing the circuit of battery B through the motor-magnet 10, whereupon said magnet gives movement to the motorframe 11, movement-receiving arm, 66, typebar-corresponding lever 60, and type-bar 6, corresponding to the key depressed, throwing said type-bar toward the printing point.

As the type-bar moves toward the printing point the releasing frame 30which is the motor-frame, strikes the jack 44, throwing it off of the key extension 43, whereupon the` circuit-closing frame 20, the bellcrank 45, and the jack 44, return to their normal positions under the influence of gravitation and ythe returning spring 29a of the circuit-closing frame, one end of which spring is attached to an arm on the circuitclosing' frame, while the other attached 'to a pin 29", set in the back of the bed-plate 1. By this means the type-bar is left free 'tb return to its normal position in advance of the releasing of the key; also, as the current is cut otl' before the type-bar strikes, clean printing is insured,y for the type-bar being free to rebound, will not vibrate or strike the paper a. second time. Further, as the spacing mechanism is actuated by the motor-magnet 10, in the manner hereinafter described. the action of the releasing frame upon the jack 44fleaves the spaceinstant after the circuit has been closed, and

much earlier than the release of the key, heating and burning out of the magnet are avoided, where they would otherwise exist. \Vith this automatic releasing device, and winding the magnet with No.27 or No. 28 Brown & Sharpe gage, single silk wire, I use ywithout difficulty a line current at 110 volts,

and t us avoid the use of a battery.

To r,wary the :torce of the blow a rheostat is use'd, consisting of a conducting arm 70, centered at 71, and having a handle 72.

Said arm sweeps-across and makes connection with the contact-pieces 73, 73, whatever one may be required. The said contact pieces are connected with each other by resistances 74,'74; the arrangement of all of which is clearly illustrated diagrammatically in Fig. 5. By setting the arm in different positions, different resistances are given to t e circuit of the motor-magnet and the power of the blow varied as required.

A switch, 220, fulcrumed at 221, and having a handle 222, makes connection with the metal piece 223, or breaks connection therewith, according to the position in which the handle 222 is thrown. Thus, by the rheostat the strength of the currentis varied, and by the switch the current is cut off from or let `into the machine, as required. connected by a link 31 with the arm 12, o

The paper varm'agef-The paper carriage illustrated in the drawings is similar in principle to that illustratedv in my pending application No. 734,864 dated October 26, 189%).

80 is the platen, mounted upon a shaft 81, which latter is set in the carriage frame. Said frame consists of a casting 82, withk a bar 83, at the back, as illustrated in the drawings. A yoke-piece 84, is hinged to the back rod 83 of the carriage frame, and to the hinge-and-guide-rod .85, which latter is supported by lugs 86, 86, rising from the topplate 2. Sald yoke-piece 84 is furnished with wheels 87, 87, which rid'e upon the hinge and guide rod 85. A pressure roller 88, having a rod 89, mounted in links 90, 90, setupon shoulder screws 91, 91, connected byxbands 92 with wheels 93 set in the levers 94, fulcrumed at 80L,`and held under tension by contractile springs 96, serve to feed the paper against and in Contact with the platen 80 (See Figs. 3, l1, 13, 17,v and 17d.)

For holding the paper against the`platen 80, the follow'ng additional means are'used, to' wit: (see Figs. 17, 17, 17h, 17, and 17d:) 80", 80, are rods set in the frame 82, parallel with the platen, and castings 809, 80", slide on these rods.. An expansive spring 80c presses a clamp or brake 80d, down on one of the rods, thereby opposing a frictional resistance to the movement of .the casting 80I upon the rod 80a, while leaving it free to move under a sufficient gentle force. A spring finger 80e is attached to each of the castings 80", to press the paper against the platen, and an adjustment screw 80f servesv to vary the tension of the spring finger 80e, as required. Another casting, 803somewhat similar to the castings 80", servesto carry the usual pressure roller 80h, which is pivoted to turn easily in the lever 80, which latter is pivoted somewhat tightly to the casting 80g (the ears 80k of the lever 801, pressing tightly against opposite sides of the casting 80g, Fig. 17%) so that it will remain in the position in which it may be placed.

The interlinear spacing mechanism is similar to well known forms in public use. There is a ratchet wheel 97, attached to one end of the platen 80. A spacing handle 98 fulcrumed at 99 and carrying a dog 100, held normally in engagement with the teeth of the Wheel 97, by a spring y100, serves, when depressed by the operator, to rotate the platen 80. The 98, and bracket 103, (which bracket is screwed to the carriage frame 82) serves to gui-de lthe handle 98and a cam 101 serves to limit the movement of the handle 98, and, according to the position in which it is set, to regulate whether the platen 80 and the ratchet-wheel 97 shall be rotated one, two, or three teeth, for a narrow, medium, or wide line. A flat spring I105, attached to the carriage frame 82, and bearing against a pin 105, set in the handle 98, serves to return said handle toits normal position. 'I 'he handle 98 is furnished with a curved thumb piece 106, while a 1inger piece 107, is attached to the carriage frame 82 for greater convenience in making line space and returning carriage to its normal position. A wheel, 108, is fulcrumed upon a shoulder upon the roller 110 whether the platen or.

carriage frame be in the upper case or lower case positlon.

Platen ah/ting mechanism-115 is the shift-key, set upon the arm 11G of the rock shaft 117, which rock shaft is mounted in hardened points set in opposite sides Qfthe Vbed-plate, and is furnished with a shorter shoulder 101 set fast in the handlex' moving in a slot 102 formed in the screw 109 at the front of they carriage, to run upon a roller 110, which 123, which latter is secured by two screws to the bracket 122. The upper part of the shifting lever 120 is formed to encircle, in part, the back rod 83 at the rear of the carriage frame, travels from right to left, slides through the shifting-lever 120, which regulates its position from front to rear of the machine. A contractile spring 124 having one. end attached to a pin 125, projecting from the ful- 120 (with its upper end encircling the back rod 83) normally in its forward position, the top of the shifting lever 120 resting against the guide-piece 123; but when the shift-key 115 and arm 116 aredepressed, the arm 118 of the shaft 117, pulling upon the short arm, of the shifting-lever 120, throws the upper part of said lever in the direction of the arrow until its motion is arrested by the adjustable stop 126. The shifting-lever, when thus shifted, moves the carriage, (whose b'ack rod 83 it encircles,) with it, thereby shifting the platen from the normal or lower easevposition to the upper case position.

When it is desired to shift the carriage for the effect is produced by mov- 128, in the directlon of the arrow, Fig. 3.

vLeLzfeespacing meclwm'sm.-130 is the dog-carrying lever, which .is centered by means'4 of hardened points 131, 131, set in the downward projecting arms of the casting 132 which face of the top-plate at the rear of the machine. The fast dog 133 is screwed fast to thedog-carrying lever 130. The loose dog (or pivoted dog) 134 is hinged at 135 to the loose dog lever 136, which latter is pivoted at 137 to the dog-carrying lever 130. A contractile spring 1348, Fig. 8, serves to hold the loose illustrated in Fig. 8. A contractile spring 138, having one end connected with the loose case position, ing the cam 127, centered at 4dog lever 136, and the other with a pin set in the casting 132, tends to move the loose and said rod, as the carriage is screwed to the lower surdog 134, in the normal position i dog and loose dog lever in the opposite di- 2 rection tortba't in which the rack-carrying frameA 139Vv (which is hinged to the yokepiece' 84 and to thehingemndguide rod 85), and rack 140 are urged by the carriage `=motor springarrangement hereinafter described., A contractile spring 141 having one end attached to the dog-carrying lever 130, and the other to a pin projecting down- Ward from the top plate serves to hold the dog-carrying-lever 1n its normal` position with the loose dog 134 in engagement with the rack 140. An arm, 142, adjustable in the shaft of the motor-frame by a screw 143, and connected by a link 144 with the dogearrying-lever 130 at the point 145, serves when a key is depressed and the circuit of the motor-magnet closed, to give movei'nent to the dogs, so that the loose dog.134 is freed from the rack and the fast dog 133 brought into engagement therewith; whereupon the loose dog, 134, under the influence of the spring 138, moves to the left, as viewed from the back of the machine, one tooth space, and the arm 146 comes in contact with and is arrested by the adjustable stop 14T set in the arm 148, of the rock-shaft 149. Vhen the circuit is broken in the manner before described the dog-carrying-lever 136 returns to its normal position under the influence of the contractile spring 1.41; the fast dog 133 leaves the rack and the loose dog 134 comes into engagement therewith; whereupon the carriage moves in the direction of the arrow Fig.- 8, until its motion is arrested by the loose-dog-lever 136 coming in contact with the stop 150, set in the dog-carrying-lever 130. But if the space-key 151 be depressed simultaneously with the key that makes the last letter of the word said space-key, connected with forward extending arms 132 of the rock-shaft 158, (which rock-shaft is fulcrumed by means of points set in opposite sides of the bed-pla tc,) raises the rearward extending arm 154 oi said rock-shaft and thus through the jack 44, arm 45 and link 155, raises the forward-extending arm 155 of the rock-shaft 149 before 1nentioncd,`de pressing the rearward extending arm 148 of said rock-shaft, and withdrawing the stop 147 from the path of movement of the arm 146 attached to the loose-dog-lever 136, so that when the dogs are operated by the motor-frame in the manner before described the loose-dog-lever, when freed from the rack, moves a sufficient distance to the left (as viewed from the rear) to clear two teetlr of the rack 140, when its further motion is arrested by the adjustable stop-screw 155, set in a lug 156 of the dog-carrying-lever 130.

In the machine illustrated in the drawings, the space-enlarging key 151 corresponding to the usual space-bar of non-electric machines, is meant to be depressed to make the interverbal space simultaneously with the last letter of a word, in which case the dogs are operated by the electro-magnet,

in the manner before described. To make a single spacc-a space by itself alone-the key 5 at the keyboard, is provided, which, like. the other keys 5, 5, controls the motorl'rame 11, space-mechanism and a type-bar in the. manner already described, but with this difference, that the contractile returning spring 60, serving for the type-bar-corresponding lever controlled by the key 5EL is so heavy that the type-bar connected therewith does not print; or the same effect may be produced by a stop, arresting said type-bar short of the printing point, so that the carriage moves in the manner already described and a space is made without any letter being printed.

Ribbon mechanism-160 is the springbox, which is mounted on the sleeve 161 said sleeve is mounted in the lugs 163 and i sult of this construction is that the springbox tends constantly to pull the carriage to the left as viewed from the front, or to the right as viewed from behind. The ribbon mechanism is propelled by the springbox when the carriage moves to the left as viewed from the front, but is not propelled by the spring-box when the carriage moves in the reverse direction.

180, 180, are the ribbon spools, and `181 and 182 are the ribbon spool shafts. The ribbon spool shaft 182 is journaled in the lugs 183 and 184, which depend from the top-plate on the right-hand side as viewed from the front. Longitudinal displacement of said shaft is prevented bythe set-collars 185, 185; but the left-hand, ribbon spool shaft, 181, has one end journaled in the lug 190, depending from the top-plate, and the other journaled in the rear end of t-he sleevel 161, before mentioned; which sleeve is boned out so that the ribbon shaft 181 does not bear on it except near the rear end. The ribbon spool shaft 181, has attached to it a small miter gear 192, and a, similar miter gear 192 is attached to the other ribbon spool shaft 182. The sleeve, 161, has attached fast to it a larger miter ear 193. At the back of the machine is a s aft 194, journaled in the lugs 195, 195, depending `from the top-plate. Said shaft carries a 161, is an escapement wheel 198. A pawl 199, carried by the spring-box 160, and held by a spring 200, causes the wheel 198, sleeve 161, and gear 193, to rotate in the direction of the arrow, Fig. IQ, when the carriage moves to the left; but when the carriage moves to the right, in returning to its normal position, the pawl 199 slides over the teeth of the escapement wheel 198, without givin movement thereto, and another pawl, 201, ulcrumed on a bracket 202, secured to the bottom of the toplate, prevents the escapement wheel 198, s eeve 161, and gear 193, from following the return movement of the spring-box 160. On the shaft 194, before mentioned, at the back of the machine, is a miter gear 210, to mesh with the gear 193 before mentioned, attached to the sleeve 161, and a smaller initier gear 211 `to mesh with the miter gear 192 attached fast to the end of the ribbon spool shaft 181. Shaft 194 has two grooves cut in it at different positions along its lengt-h, to receivea locking-lever 212, and said shaft slides 1n its bearings in the lugs 195, 195, to permit the locking-lever 212 to be dropped into either one of the grooves, or slots, before mentioned. When the parts occupy the positions illustrated in Fig. 9, the, gear 198 attached to the sleeve 161, meshes with the gear 197 on the shaft 194, and the gear 196 on said shaft 194, also meshes with the gear 192al on the right-hand ribbon spool driving shaft 182, the result of all of which is that the movement communicated from the spring-box to the escapement wheel 198, sleeve 161, and gear 193, is transmitted to the gear 197 and shaft 194, and thence to the gear 196, and so to the gear 192, whereby the ribbon is wound on to the right hand ribbon spool 180. But if the lockinglever 212 be lifted and the shaft 194 shoved to the right until'the lockingdever drops into the other one of the two grooves before mentioned, the gear 196 and 192", and 193 and 197 will no longer mesh; but the gear 193 will mesh with the gear 210, givlng movement to said gear and the shaft 194, and the gear 211 carried by said shaft will mesh with the gear 192 attached fast to the left hand ribbon spool driving shaft 181, so that the ribbon will now be wound on to the left hand ribbon spool 180 and ofi' the right-hand ribbon spool 180. In a word, the arrangement is such as before described and illustrated, that by shifting the rod.

194 the right-hand or the left-hand ribbon spool driving shaft is made to wind the ribbon onto itself and off of the other; and the ribbon feed may be reversed as desired.

The form of shifting mechanism illustrated in the accompanying drawings ,is that in Which the platen is shifted; but anoth r form of shifting mechanism is well knovgi in the art and in common use, in whichgfthe types themselves are shifted instead of tlie platen. While I prefer the former kind of shifting mechanism, by which the platen is shifted, the other kind, in which the types are shifted, may be used instead, in carrylng out my invention. And when, in the statement of claim at the end hereof I use the term shifting mechanism, or other language.

of similar import, I refer to shifting mechanism broadly and mean to include in that term the various sorts well known in the art, and as well that in which the types are shifted as that in which the platen is'shifted.

In some of the paragraphs of claim at the endhereof I speak of a striker, for giving movement to the movement-receiving arms, typebar-corresponding levers, or other parts. The motor-frame 11, illustrated in the drawings, is one suitable form of striker, but any other suitable form might be used instead.

In some of the paragraphs of claim at the end hereof I speak of the movement-receiving ends of the type-bancorresponding levers. By the movement-receiving ends of the type-barcorresponding levers I mean the ends of said levers to which the movement is first communicated, or through which it is communicated to the lever.

As pointed out in previous patents and in pending applications for patents, of mine, some other motor-device than an electromagnet might be used for impelling the type-bars, spacing-mechanism, releasingmechanism, etc.; for example, a pneumatic motor device might be used of the sort, t0 mention one suitable form, commonly used in pipe organs to actuate the valves thereof, in so-called pneumatic-actions The frame, 20, or some similar device, might, in such case, be used to control the valves of such pneumatic power device in the same manner in which the keys of an organ now control the valves of the corresponding pneumatics. Or, obviouslv. each key might control a valve or valves. But the arrangementv of a single motor-controlling frame, as 20, controlled by a plurality of theJ keys or by all of them, is preferable.

Very obviousiy, while actuating some of the typebars by a motor device, as shown,-

it would be possible to actuate some of them in some other fashion, as, for example, directiy by the finger. So, also, some of the type-bars might be operated by one motordevice, and others by another motor-device: Thus, to mention one arrangement, two motor frames .may be used, each of, say, half the length of the motor-frame 11, with two circuit-closing frames each like the circuitclosing frame, 20, but of half that length, and two releasing frames, each say, of half the length of the present releasing-frame 30. The effect of this arrangement would be to reduce the weight of the moving pai ts;

but, on the other hand, would increase the complexity and cost of the machine. But it will be understood, that when I speak 0f a single motor device actuating type-bars, or a plurality of type-bars, or use other language of similar import, I do not mean to limit myself to a construction in which the motor-device actuates every type-bar of the machine. Hence, when; in the paragraphs of claim at the end hereof. I speak of a plurality of type-bars, without saying a complete set, I do not wish to be limited rto a complete set of type-bars.

The releasing-frame 30, might. obviously, be operated by a magnet, or some motor device other than that which impels the typebars. Thus, to mention one out of several possible constructions, a magnet arranged in parallel or in series with the motor-magnet; or controlled in any other way, by the circuit-closing-fralne, or by the keys, might be connected to the'releasing-frame 30, so that on the depressing of a key said releasingframe will act upon the arm 4l. to permit the bell-crank 45 and parts controlled thereby, to return to their normal positions. So,

i also. obviously the spacing mechanisln might be operated by some other magnet or motor device than one which actuates type-bars.r

All which is fully illustrated or explained in previous patents or applications for patents of mine, And, finallyq I wish it to be very distinctly understood that many modifications may be made in the details of `mechanical construction for embodying my in-Y vention, without departing from the essential principles of my invention. which are Set forth in the statement of clailn at the end hereof; and I wish it to be very clearly understood that it is not my intention to dedicate or abandon any part of my invention to the public, but that l wish full protection for all, and every part of the invention which l have made.

V'hat, therefore. l claim as my invention, and desire to secure by Letters latcnt, is:

l. ln a type-writing machine and in combination, (a) a multiplicity of type-bars striking to a common printing center; said type-bars being disposed part ot' them in front of said printing center. and part of them behind said printing center; (l1) a set of type-bar-corresponding levers,leach ref cciving movement at one end for the impelling of the corresponding type-lmr;said type bar-corresponding levers being disposed in two groups; the levers of each group being parallel or nearly parallel with the other levers ol' that group; the levers of one of said groups being connected with the type-hars before mentioned as disposed in front of the printing center, the levers of said group being fulcrumed in front of the printing center; the other group of type-bar-corresponding levers heilig connected with the ,and the levers of the other type-bars before mentionedA as disposed behind the printing center; said levers being fulcrumed behind the printing center; the movement-receiving ends of the type-barcorresponding levers of the two groups above mentioned lying in proximity to each other, and the levers of the two groups extending in opposite directions from their movementreceiving ends, the levers of the one group extending toward the front of the toward the rear of the machine.

2. In a type-writing machine and in combination, (fr) a set of typebars striking to ey machine,l group extending" of type-bar corresponding levers being connected with the type-bars before mentioned as disposed behind the printing center; said levers being fulcrumed behind the printing center; the movement-receiving ends of the type-bar-corresponding levers of theltwo groups to eachother, and the levers of the two groups extending in opposite directions from `t1eir` movement-receivinfr ends, the levers of the one group exten( ing toward the front of the machine, and the levers of the other group extending toward the rear of the machine; (0)' motor mechanism for actuating said type-bar-corresponding levers: (Il) keys correspondingto the typebar-correspomling levers aforesaid, a key for each type-bar-corresponding lever; and (c) means, controlled by said keys, whereby the motor mechanism aforesaid is caused to actuate the different typebars aforesaid, each as required.

3. In a type-writing machine and in combination, (a.) la, plurality of type-bars disposed in front of the printing center, and cach carrying a plurality of type; (1)) a plurality of typebars disposed behind the printing center, and each carrying a plurality of type; (e) a longitudinally-travelmg paper-carrier; (rl) suitable shifting above mentioned lying in proximity- 'iiig levels of the i' allel or nearly parallel with the other levers of that group; the levers of one of said groups being 'connected with the type-bars before mentioned as disposed in front of the printing center, the levers of said group being fulcrumed in front of the printing center; the other group of type-bar-correspondiiig levers being connected with the typebars before mentioned asdisposed behind the printing center; said levers being fulcrumed behind the printing center; the

m vement-receiving ends of the type-barcorresponding levers of the two groups above mentioned lying in proximity to each other, and the levers of the two groups extend'ng in opposite directions from their mov ment-receiving ends, the levers of the one group extending toward the front of the group extending toward the rear of the miichine.

4. In a type-writing machine and in combination, (a) a plurality of typebars disposed in front of the printing center, and each carrying a plurality of type; (b) a plurality of type-bars disposed behind the -printiyng center, and each ity of type; (c) a platen ounted to move longitudinally and to shift transversely; (al) a shift-key and means'controlled thereby, for shifting said platen from one printing Position to another; (e) a set of type-barh corresponding levers, each receiving movement at one end for the impelling'of the corresponding type-bar; said type-bar-corresponding levers being dis osed in two groups; the levers of one o said groups being connected with the type-bars before mentioned as disposed in front of the printing center, the levers of said group being fulcrumed in front of the printing center; the other group of type-bar-corresponding levers being connected with the type-bars before mentioned as disposed behind the printing center; said levers being fulcriimed behind the printing center; the movementreceiving ends of the type-bar-coriespondtwo groups above mentioned lying in proximity to each other, and the levers of the two groups extending in ,opposite directions from their movement-re ceiving ends, the levers of the one groupextending ytoward the front of the machine, and thelevers of the other group extending toward the rear of the machine; (f) motor mechanism for actuating said type-ba'r-corresponding leveis; (g) keys corresponding to the type-bar-corresponding levers aforesaid, a key for each type-bar-corresponding lever; Yand (li) means, controlled by3 sai-d keys, whereby the motor mechanism aforesaid is caused to actuate the different type bars aforesaid, each as required.

5./In a typewriting machine and in commiichine, and the levers of the other carrying a plural- V ng levers being disposed in two groups; thelevers of each group being parallel or nearly parallel with the other levers of that group; the levers of one of said groups being connected with the type-bars before mentioned as disposed in front of the printing center; the levers of crums in front of the printing center; the other group of type-bar-corresponding levers being connected with the type-bars be- A fore mentioned as disposed behind the print and having their fulcrums also behind the printing center; the movementreceiving ends of the type-bar-corresponding levers of the two groups before mentioned lying in proximity to each other, and the levers of the two groups extending in opposite directions from their movementing center,

receiving ends, the levers of the one group extending toward the front of the machine, and the levers of the other group extending toward the rear of the machine.

6. In a type-Writing machine and in combination, (a) a set of type-bars striking to a common printing center; said type-bars being disposed part of them in front of said printing center, and part of them behind'said printing center; (b) a set of typebar-corresponding levers, said type-barcor responding levers being levers of the first order, each having one end connected with the corresponding type-bar, and receiving movementat the other end for the iinpelling of said type-bar; said type-bar-corresponding levers being disposed in two groups; the levers of one of said groups being connected witlithe type-bars before mentioned as dis-- posed in front of the printing center; the levers of said group having their fulcriims in front of the printing center; the other group of'type-bar-corresponding levers being connected with the type-bars before mentioned as disposed behind the printing center, and having their fulcrums also behind the printing center; the movement-receiving ends of the type-bar-corresponding levers of thetwo groi'ips'before mentioned lying in proximity to each other, and the levers of the two groups extending in op-V rinsg and the levers of the other group extending'- said grouphaving their fuli 

